Example Configuration Of Ospf Areas - HP 7102dl - ProCurve Secure Router Configuration Manual

IP Routing—Configuring RIP, OSPF, BGP, and PBR
Configuring OSPF
Stub area 1
.5
Router B
172.16.80.0 /20
172.16.112.0 /
15-52
For example, suppose that traffic between area 1 and the ABR must travel
over a relatively low-speed link. In this case, you might change the default-
cost setting to 20:
ProCurve(config-ospf)# area 1 default-cost 20

Example Configuration of OSPF Areas

The WAN shown in Figure 15-12 connects the company's headquarters to three
remote sites in a Frame Relay network. The headquarters makes up the
network backbone, and its WAN routers are the ABRs for the routers at the
remote sites. Each site is defined as a stub area. Area 2 is a total stub area.
The WAN router in this area has only the one connection for remote and
external traffic and does not need summary routes. Area 3 is a normal area; it
connects to the Internet with an ASBR.
The organization uses the Class B network address 172.16.0.0, which it has
divided into 16 /20 subnets. It has grouped four of these subnets at each site.
172.16.64.0 /20
.2
.5
ABR A
Router C
172.16.144.0 /20
Figure 15-12. OSPF Area Configuration
Area 0
172.16.16.0 /20
.2
.2
.2
172.16.128.0 /20
.4
.4
172.16.176.0 /20
Total
stub
area 2
Normal area 3
172.16.192.0 /20
.1 ASBR .1
.1
172.16.224.0 /20
10.1.1.0 /30
Internet